messinqer



(To @ZZ whom ,it may colf/Leerm-y `-of Cambridge, vcounty of MiddlesemState ot' Io jet pumps such as commonly employed for liftvto produce a vacuum, so that the liquid is power, so that the liquid is not colnmonlylde and preventing the subsequent,operation of ging operation started.

lthe delivery or outlet end of the combiningvacuu1n-chamber, producing a vacuum therewinmniifr. yon -baivinainen ivinssaenusnrrs fsJ sono a.

, SECHATIQN iorming part oi'Letters Patent i i .i if L i v Application filed JulyQB, 1884. (Moileh) Be'itknown that LVILLIAM T. Mnssrnonn,

Massachusetts,have invented an Improvement in Ejectors, yofwhich the following description, in connection with accompanying drawings, is a speeiiication, likeletters on the drawings representing like parts.

My invention relates to ejector-s or steaming a liquid from a level below the ejector and delivering the same at a higher level.

Apparatus of this class is usually intended lifted by atmospheric pressure, and the ejectors generally do not have very great forcing livered at a level much above the ejector itself or against any considerable back-pressure. v It results from such constructionoi' the'ejector that in ease there is amomentary back-press. ure or obstacle to the delivery of the iiuid the flow of the latter ceases, and the jetof steam is diverted into the suction or liquidsupplying pipe, thus destroying the vacuum the ejector, making it necessary to stop the dow of steam and cool the apparatus before a vacuum can again be created and the pump- The' object of my invention is to overcome such objections and to produce an ejector the operation of which will not be stopped by a momentary back-pressure or obstacle to the iiow of the liquid being delivered.

The invention consists in an ejector having the usual steam-jet nozzle, waterfinletchamber,and combining-tube, combined with a vacuum-chamber and an auxiliary delivering tube or nozzle, the inlet end of which is opposite tube, there being a smallspace between them, forming an annular passage communicating with the vacuumchainber. The i'low ofthe luidthrough the combining and delivering tubes willfremove the fluid contents from the in, and in casean obstruction should arise to the delivery of the liquid in its proper channel the liquid will bereceived inthe vacuumffpATENT OFFICE- No..3\1e,soe,'a"aren April 28,1885.

'when 4the liquidL will pursue its proper course rfrom the delivery-tube, andthe vacuum-chamber will again be emptied ready to receive thev liquid if its dow should be again inten rupted.

Figure 1 is a longitudinal section of an ejector embodying this. invention, and Fig. 2

a similar section showing a modified construe tion.

` The ejenor consists, essentially, oi a main piece or casting, a, `having an internal chamber, b, provided with an inlet-passage, c, for the liquid to be raised, the partition d at o neV side oi'thesaid chambersupporting the comblning-tube e, shown in this instance as a portion ofthe same casting. The partition j' at the other side ofthe said chamber is provided with a threaded neck, g, which receives and supports the steam-j et nozzle h., which is tightly screwed into the said neck, being thus held rigidly with relation to the main casting a, with' a perfectly-tight joint between the said nozzle and casting.

The main casting a is preferably threaded at both ends, as shown in' Fig. 1, and at the end adjacent to the steam-nozzle 7i has a steaminlet piece, i., connected with the main casting a by a coupling-nut` It. A. liquid-delivery piece, m, is connected with the other end of 8o the'said main casting a by a couplingnut, n, similar to the one it, the said piece m having an auxiliary delivery-tube, o, in line with thecombiningtube e, but separated therefrom by a small space constituting an annular passage, p. A

rIhe portion of the casting a surrounding the delivery end of the combining-tube@ and portion of the casting or delivery-piece in sura lower level through a conduit connected with the inlet c, and the combined jet or stream passing through the combining-tube e and into4 the delivery-tube o operates to rem'ovejkthe contents from the chamber r, producing avacuum therein, and in case a momentary obstruction should occur, interrupting or retarding the flow of fluid through the delivery-passage o and pipe leading therefrom, the liquid will still continue to flow through the cornbining-tube e, entering the vacuum-chamber r, which thus relieves the combining-tube and chamber b from back-pressure until the obstruction is removed, when -the iiow will continne through the delivery-passage, as before, emptying the vacuum-chamber, which will thus be ready to receive the liquid again in the event of another obstruction.

In the modification shown in Fig. 2 the vacuum-chamber i' and the delivery-tube o are made in the main casting a by suitable coring, and it is obvious that the invention is not lim7 ited to any particular shape or size of the said vacuum-chamber.

If it is found desirable to increase the spacein the vacuum-chamber beyond what is ,convenient to provide for in the main casting or ej ectorproper, an auxiliary chamber, as shown at r', Fig. 2, may be connected with the main portion of the injector, so as to communicate with or form part of the vacuuiDchamber r, care being taken that the said auxiliary chainber and the joint between it and the main portion of the ejector is perfectly air-tight, so that when the ejector is operating properly the en- 'tire Space within the said chamber r rwill be emptied, producing avacuum therein.

I claim'- l. In an ejector, the combination of the steam-nozzle, water-inlet chamber, and combining-tube with a vacuum-chamber in the body of the ejector communicating 'with the said combining-tube at its delivery end and an anxiliary vacuum-chamber extended to the ejector, substantially as and for the purpose set forth.

2. In an ejector, the main casting threaded at both ends and comprising a water-inlet chamber and combining-tube, combined withl a steam-nozzle, a steam-inlet piece coupled upon one end of the main casting, and an out- 45 let-piece having a liquid-delivery tube in line with the combining-tube coupled to the other end of the main casting, with which it forms a vacuum-chamber communicating with the combining-tube, substantially as described.

substantiallyr as and for the purposede.

scribed. In testimony whereof I have signed my name to this specification in the presence of two enb- 65 scribi ng witnesses.

WM. T. MESSINGER. Vitnesses: j

Jos. P. LIvERMoRE,

It is hereby certified that in Letters Patent No. 316,804, granted April 28, 1885, lipon the application of William T. Massin ger, of .Gambridge, Massachusetts, for an improvement in Ejeot0rs, an error appears in the printed speeiietion requiring correction,

as follows: In lino 24, page 2, the word injector should read ejector; and that the Letters Patent should be read with this correction therein to make it conform oo the record of the case in the Patent Office.

Signed, countersigned, and sealed this 30th day of June, A. D. 1885.

[SEAL] B. L. MULDROW, 1

Acting Secretary of the Interior. Countersigned z M. V. MONTGOMERY,

Commissioner of Patents. 

